Senior Rust/C++ Backend Engineer (Remote - EU)

This is a remote position.

The employer develops a breakthrough high-performance onchain exchange that delivers institutional grade execution, whilst delivering superior speed, security and reliability guarantees to users. Their revolutionary decentralized exchange operates as the world's first trading-specific Based Rollup on Ethereum offering core competitive advantage : Unlike traditional Layer 2 solutions that rely on single sequencers, Based Rollup grants transaction sequencing rights directly to Ethereum validators, achieving true decentralization.

This design delivers significant benefits:

- Speed: < 1ms trade execution (100 times faster than top DEXs)

- Security: verifiable order execution and settlement, via zk-proofs, with executed trades settling on Ethereum. over 950,000 Ethereum validators securing every transaction. Transaction data ultimately settles on Ethereum mainnet, inheriting all L1 security guarantees.

- Reliability: no single point of failure, with the rollup design having multiple rotating L2 nodes (unlike generation-1 rollups)

Their custom trading engine is written in Rust, achieving deterministic execution. Their engine is cross-compiled into zero-knowledge circuits, allowing the network to generate validity proofs for each state transition, ensuring provably correct order execution.

They’re looking for a Senior Rust/C++ Engineer based anywhere in Europe (Remote), to join their team

As a Senior Backend Engineer, you will play a crucial role in designing, developing and maintaining robust and scalable backend systems. Your role goes beyond writing code—you’ll architect systems that are resilient, secure, and optimized for low-latency, real-time processing.

MISSIONS

Backend Development: Design, develop, and maintain the core backend systems that power the company's DeX and Network. This includes writing clean, efficient, and maintainable code. The exchange backend will need to support a high-throughput order-book and index on-chain data into event queues and various persistence layers to be consumed by the UI and Risk Dashboards via scalable APIs and WebSockets.

System Architecture: Define the high-level structure of the backend systems, the data flow, and interactions between the various components of the backend stack. Focus on messaging and event-driven architecture patterns common in financial services.

Reliability, Performance & Availability: Ensure the architectural design addresses reliability and high availability and performance requirements. Implement failover mechanisms, redundancy, and disaster recovery plans to minimize downtime.

Security: Implement and maintain robust security measures to protect backend systems and APIs from a variety of attack patterns including but not limited to DDoS attacks, data breaches, injection attacks.

Data Storage Strategy: Define the strategy for data storage, including selection of databases and data models suitable for financial applications. Consider trade-offs between relational, key-value stores and messaging queues.

Testing Strategy: Develop and execute a comprehensive testing strategy including unit, integration, security, load and performance testing. Collaborate with the development team to create and maintain detailed test reports and testing processes.

Technological Evaluation: Stay updated on emerging technologies and trends in backend development and architecture. Evaluate the potential adoption of new tools, frameworks, and methodologies to enhance our systems' performance and scalability.

Documentation and Communication: Clearly document the architectural design, making it accessible to the development team and non-technical audience. Collaborate with software engineers to implement the design effectively and ensure that it aligns with the intended goals.

Code Review: Participate in code reviews, mentor junior engineers, and enforce coding standards and best practices.

Team Collaboration: Work closely with the cross-functional team, including on-chain and front end engineers as well as the heads of product management and quant, cto and ceo.

Requirements

The ideal candidate is someone who loves DeFi, web3, engineering, security, rigor and speed. A highly skilled Senior Backend engineer with over eight years of experience with a commitment to code quality and state-of-the-art software testing practices.

You are able to support the team with shipping robust and performant code,fast.

Requirements :

8+ years of experience as a Backend Engineer with experience working in financial services industry

6+ years of experience with Rust and/or C++ building highly scalable webservices

Mastery of asynchronous programming and advanced concurrency patterns. Emphasis on thread safety and lock-free data structures.

6+ years of experience designing and maintaining relational databases like PosgreSQL

4+ years of experience with messaging and low latency persistence like Kafka, Redis, RabbitMQ or others

Experience in building and maintaining high-availability systems that have handled significant transaction volumes in a Web3 and trading environment

Experience with low-level network programming, including asynchronous I/O, direct socket programming, and familiarity with Linux kernel optimizations (e.g., epoll, zero-copy, or even kernel bypass techniques where applicable)

Experience in fine-tuning latency-sensitive components, particularly in trading systems like order matching engines and risk engines

Strong verbal and written communication skills and the ability to work effectively in a collaborative team environment

Strong proficiency in securing and hardening backend systems and APIs against evolving security threats.

Strong knowledge of software testing methodologies

Experience with cloud platforms (e.g., AWS, Azure, GCP) and containerization tools (e.g Docker, Kubernetes)

Preferred Qualifications

Bachelor's or Master's degree in Computer Science or a related field or equivalent experience

Experience with low-level network programming, including asynchronous I/O, direct socket programming, and familiarity with Linux kernel optimizations (e.g., epoll, zero-copy, or even kernel bypass techniques where applicable)

Experience in fine-tuning latency-sensitive components, particularly in trading systems like order matching engines and risk engines

Familiarity with blockchain technology, smart contracts and decentralized systems

Knowledge and understanding of fundamentals of finance, more specifically derivatives trading

Benefits

Location : Remote - Anywhere in Europe

Perks : Flexible PTO - Health Insurance - Major industry conferences and events covered - Remote-first - Equity by way of tokens on top of salary

Interview Process :

Hiring Manager Interview

Technical Interview

Founder / CEO Interview